Need help with ECU

Originally Posted by SouthArk370Z

That should help. Some states are real sticklers.


The ECM has to think that the emissions system is ready and functioning properly before it will give the ready signal via OBD. I'm not sure exactly how the ECM does that but it takes several drive cycles (with everything working properly) before it will give the signal.

My guess is that you will need a stock ECM in order to get the system ready signal - but I don't know. The person that did the existing tune should be able to tell you what you need to do to pass the smog test. If you can't get a response from him, then I'd look for a tuner that is familiar with your ECM.